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Nelson rules

Nelson rules are a method in process control of determining whether some measured variable is out of control (unpredictable versus consistent). Rules for detecting "out-of-control" or non-random conditions were first postulated by Walter A. Shewhart in the 1920s. The Nelson rules were first published in the October 1984 issue of the Journal of Quality…

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Nelson rules

Nodes12
Edges11
Triples0
Avg. degree1.83
Density0.166667
Components1

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rules control chart variable range nelson value first applied time moving adjacent points situation alerts may also process quality mean

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